A.auto-ignition point
B.flash point
C.burning temperature
D.fire point
第1题
A.prevent the gear box from leaking
B.prevent the oil from becoming inflammable
C.make sure it has not become contaminated
D.make sure the motor bearings are lubricated
第2题
A.fuel spray; the burning of the fuel
B.the burned gas mixture; connecting rod
C.medium shaft; crankshaft
D.the burned gas mixture; piston rod
第4题
A.reduce friction between moving surfaces
B.provide even distribution of bearing wear
C.reduce the accumulation of harmful detergents
D.maintain a constant oil temperature output at each beating
为了保护您的账号安全,请在“上学吧”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!